Content-Type: text/html; charset=UTF-8 Double Star Calculator - Orbital Elements

Double Star Calculator - Orbit

- Revision:		$Rev: 1216 $
- Report created:		2025-07-11 18:40:45

Orbital Elements for COU1284

WDS:	COU1284	WDS ID/Discoverer
P:	78.000	Orbital period (years)
a:	0.19	Semi-major axis (arcseconds)
i:	114.1	Inclination (degrees)
Ω:	47.5	Longitude of ascending node (degrees)
T:	1964.010	Epoch of periastron passage (year)
e:	0.55	Eccentricity
ω:	254.3	Longitude of periastron (degrees)
Start-Year:	1986.0	Year
End-Year:	2064.0	Year
Epoch:	2025.0	Besselian Epoch

Further data from the WDS Sixth Catalog of Orbits for COU1284

Position:	164502.06+384229.6	Epoch-2000 right ascension and declination
WDS-ID:	16450+3842	WDS designation
Discoverer Code:	COU1284	Discover designation and components
ADS number:	.	Aitken Double Star catalog
HD number:	.	HD catalog number
Hipparcos number:	.	Hipparcos catalog number
V1:	9.5	Magnitude of the primary
V2:	9.5	Magnitude of the secondary
Equinox:		Equinox
Date:		Date of last observation
Orbit grade:	5	Orbit grade, ranging from 1 'definitive' to 5 'indeterminate'
Flags:		Flags

Double Star Orbit for COU1284

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ValueError

Python 3.12.3: /usr/bin/python3
Fri Jul 11 18:40:45 2025

A problem occurred in a Python script. Here is the sequence of function calls leading up to the error, in the order they occurred.

/var/www/cgi-bin/ds_orbit.py in <module>

891

892 # Smooth curve if necessary

=> 893 x_smooth, y_smooth = Q_get_smoothed_orbit(x_list, y_list)

894 plt.plot(x_smooth, y_smooth, label=f'Orbit of {wds}', color='#528B8B')

895

x_smooth undefined, y_smooth undefined, Q_get_smoothed_orbit = <function Q_get_smoothed_orbit>, x_list = [-0.08532911588769464, -0.08009278997471508, -0.07464728294763162, -0.06901688109284379, -0.063223618234882, -0.057287614403355294, -0.05122736049981984, -0.045059960443312515, -0.038801337990715556, -0.03246641529400114, -0.026069268382994924, -0.019623263887408277, -0.013141180544520818, -0.0066353184413731085, -0.0001175984760101741, 0.006400345852407166, 0.012907082358832804, 0.01939129848353395, 0.025841721921432952, 0.03224704273156195, ...], y_list = [0.17545339844417995, 0.17630323924998062, 0.1766929209845317, 0.17664522754670225, 0.1761809611177151, 0.17531917648716905, 0.17407738417290405, 0.17247172726713136, 0.17051713599541374, 0.16822746348300996, 0.16561560564785927, 0.16269360770578967, 0.15947275941114972, 0.15596368085938225, 0.1521764004376344, 0.14812042630701275, 0.1438048127329915, 0.13923822217587625, 0.13442898456069916, 0.12938515435966844, ...]

/var/www/cgi-bin/ds_orbit.py in Q_get_smoothed_orbit(x_list=[-0.08532911588769464, -0.08009278997471508, -0.07464728294763162, -0.06901688109284379, -0.063223618234882, -0.057287614403355294, -0.05122736049981984, -0.045059960443312515, -0.038801337990715556, -0.03246641529400114, -0.026069268382994924, -0.019623263887408277, -0.013141180544520818, -0.0066353184413731085, -0.0001175984760101741, 0.006400345852407166, 0.012907082358832804, 0.01939129848353395, 0.025841721921432952, 0.03224704273156195, ...], y_list=[0.17545339844417995, 0.17630323924998062, 0.1766929209845317, 0.17664522754670225, 0.1761809611177151, 0.17531917648716905, 0.17407738417290405, 0.17247172726713136, 0.17051713599541374, 0.16822746348300996, 0.16561560564785927, 0.16269360770578967, 0.15947275941114972, 0.15596368085938225, 0.1521764004376344, 0.14812042630701275, 0.1438048127329915, 0.13923822217587625, 0.13442898456069916, 0.12938515435966844, ...])

272 # Nur wenn ausreichend Punkte vorhanden sind

273 if len(x) >= 4:

=> 274 tck, u = splprep([x, y], s=0.0, per=True) # per=True für geschlossene Kurve (Orbit)

275 u_fine = np.linspace(0, 1, 300) # Feinere Parameterwerte

276 return splev(u_fine, tck)

tck undefined, u undefined, splprep = <function splprep>, x = array([-4.73113366e-02, -2.72617821e-02, -5.4256....06904939e-02, -7.91077156e-02, -6.46882718e-02]), y = array([-4.27433622e-03, -2.32050742e-02, -4.0571....08643520e-02, 3.34910044e-02, 1.49358121e-02]), s undefined, per undefined

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_py.py in splprep(x=[array([-4.73113366e-02, -2.72617821e-02, -5.4256....06904939e-02, -7.91077156e-02, -6.46882718e-02]), array([-4.27433622e-03, -2.32050742e-02, -4.0571....08643520e-02, 3.34910044e-02, 1.49358121e-02])], w=None, u=None, ub=None, ue=None, k=3, task=0, s=0.0, t=None, full_output=0, nest=None, per=True, quiet=1)

153 """

154

=> 155 res = _impl.splprep(x, w, u, ub, ue, k, task, s, t, full_output, nest, per,

=> 156 quiet)

157 return res

res undefined, global _impl = <module 'scipy.interpolate._fitpack_impl' from '...ist-packages/scipy/interpolate/_fitpack_impl.py'>, _impl.splprep = <function splprep>, x = [array([-4.73113366e-02, -2.72617821e-02, -5.4256....06904939e-02, -7.91077156e-02, -6.46882718e-02]), array([-4.27433622e-03, -2.32050742e-02, -4.0571....08643520e-02, 3.34910044e-02, 1.49358121e-02])], w = None, u = None, ub = None, ue = None, k = 3, task = 0, s = 0.0, t = None, full_output = 0, nest = None, per = True, quiet = 1

/usr/lib/python3/dist-packages/scipy/interpolate/_fitpack_impl.py in splprep(x=array([[-4.73113366e-02, -2.72617821e-02, -5.425...e-02, 3.34910044e-02, -4.27433622e-03]]), w=array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u=array([0. , 0.03578928, 0.07200115, 0.106... 0.88500349, 0.90882352, 0.93592445, 1. ]), ub=0, ue=1, k=3, task=0, s=0.0, t=array([], dtype=float64), full_output=0, nest=85, per=True, quiet=1)

172 wrk = _parcur_cache['wrk']

173 iwrk = _parcur_cache['iwrk']

=> 174 t, c, o = _fitpack._parcur(ravel(transpose(x)), w, u, ub, ue, k,

=> 175 task, ipar, s, t, nest, wrk, iwrk, per)

176 _parcur_cache['u'] = o['u']

t = array([], dtype=float64), c undefined, o undefined, global _fitpack = <module 'scipy.interpolate._fitpack' from '/usr/...polate/_fitpack.cpython-312-x86_64-linux-gnu.so'>, _fitpack._parcur = <built-in function _parcur>, global ravel = <function ravel>, global transpose = <function transpose>, x = array([[-4.73113366e-02, -2.72617821e-02, -5.425...e-02, 3.34910044e-02, -4.27433622e-03]]), w = array([1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1... 1., 1., 1., 1., 1., 1., 1., 1., 1., 1., 1.]), u = array([0. , 0.03578928, 0.07200115, 0.106... 0.88500349, 0.90882352, 0.93592445, 1. ]), ub = 0, ue = 1, k = 3, task = 0, ipar = False, s = 0.0, nest = 85, wrk = array([], dtype=float64), iwrk = array([], dtype=int32), per = True

ValueError: Invalid inputs.
      add_note = <built-in method add_note of ValueError object>
      args = ('Invalid inputs.',)
      with_traceback = <built-in method with_traceback of ValueError object>